How do you check what version of Server Message Block client a workstation is using on Windows?

Question

Sometimes over slow connections we switch to an older version of the protocol. I'd like to be able to check and see which version is being used, I only know how to set the version ala:

sc.exe config lanmanworkstation depend= bowser/mrxsmb10/nsi 
sc.exe config mrxsmb20 start= disabled

How does one check the version of the protocol being used without using Powershell?

Answer 1

If you have Windows 8.1 or 2012, you can use the PowerShell cmdlet Get-SmbConnection for that.

To interpret the answer (copied and pasted from here):

• SMB 1 - Windows 2000
• SMB 2 - Windows Server 2008 and WIndows Vista SP1
• SMB 2.1 - Windows Server 2008 R2 and Windows 7
• SMB 3.0 - Windows Server 2012 and Windows 8

Sample output:

ServerName   ShareName   UserName      Credential                 Dialect   NumOpens
----------   ---------   --------      ----------                 -------   --------
SERVER2      f$          DOMAIN\USER   otherdomain\otheruser...   2.02      1
SERVER1      backups     DOMAIN\USER   DOMAIN.LOCAL\USER          3.02      2
SERVER3      users       DOMAIN\USER   DOMAIN.LOCAL\USER          2.02      1

If you don't, perhaps this related question will help:

• ServerFault, How do I find out what version of SMB is enabled on a remote host?

Answer 2

You can check the status of the SMB 1/2 services, as seen here:

sc query mrxsmb10
sc query mrxsmb20

In PowerShell, you will need to use sc.exe instead of sc!